Improvement in automatic vaccinating-instrdments



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CHARLES H. ECCLESTON, OF OXFORD, NEW YORK.

Letters Patent No. 98,478, dated January 4, 1870; antedated December 24, 1869.`

IMPROVEMNT IN' AUTOMATIC VACCINATING-INSTRUMENTS.

The Schedule referred to in these Letters Patent and making part of the same. i

TJ all whom it may concern:

Be it known that I, CHARLES H. EocLns'roN, of Oxford, in the county of Chenango, in the State of New York,1iave invented a new and improved Instrument for Vaccinating with vaccine matter; and I do hereby declare'that the following is a full and exact description thereof, reference being had to the accompanying drawing, and to the letters of reference marked thereon, making apart of this specification, in which- Figure 1 is a perspective view of the instrument, with the point-protector removed, and

Figure 2 is alon'gitudinal section of the same, showing' the interior arrangement of the several parts.

My invention relates to an automatic instrument for vaccinating, and `consists of a combination and arrangement of devices which puncture the. flesh and inject the-fluid vaccine matter therein, and also/an arrangement of parts whereby the amount of tluid forced into the {iesh is regulated.

To enable others skilled in the art to make and use ,myinventiom I will proceed to desc-ribe its constructionv and operation. v

I take a tube of any suitable metal, of convenient size, 1o which is firmly attached, at one end, a reservoir, F,`(the reservoir may extend the whole lengt-h of the iustrument,) which may be of any metal, though silver or non-corrosive is preferred.

' This reservoir is closed by a perforated block at its one end,`which perforated block yterminates in a hol low, sharp-pointed lancet. 4At its other cud, a hollow screw-threaded collar, H, is secured with tube G, through which a rod moves to operate the piston iu the reservoir F.

Tube G extends through the cap ot the case B, suicient to admit of a head.

The piston-rod extends a short distance beyond, and is provided with a screw-thread and nut, M, for purposes to be more fully hereinafter set forth.

At a convenient point near thev cent-re of case B, and sliding freely therein, a collar, I, surrounds the tube G, and is firmly attached by solder. The set-screw E, which moves in a slot, N, in the side of the case, acts as a guide for the collar, and the parts attached thereto, and limits their' downward motion.

Seated upon the collar I, and being against the inner side of the cap of the case, is a spiral spring, which surrounds the tube G, and propels the reservoir F and tube G, for purposes hereinafter specified.

At a point on the case B, opposite the slot N, is

hinged a pawl, A, held to duty by a spring. Its pur-f.

pose is to hold the internal arrangements in a fixed relative position at a certain time, in using the instrument, by means of its point catching through a hole in the case over the lower cud of the collar I.

To operate my device, I proceed as follows: Reduce the -vaccine matter to a fluid form, either by the aid of glycerine or other suitable material,

winch is introduced into the reservoir F, as follows:

D constantly charged with vaccine matter, by means of a slight downward motion of the -pistou-rod, h'ist turning the screw M a triiic back.

The reservoir, with its lancet, is drawn back by means of the head of tube G, until the spring-pawl :catches over the end of thecollar I, in which position the instrument is readyfor use.

Upon applying the end of the pointed cap C to the -body of the person, and relieving the spring-pawl A,'

the lancet D will he`forced, by means ofthe spiral spring K, into the flesh, and the fluid vaccine matter enters the wound and completes the operation.

Any suitable material may be used for the several parts.

Having described my invention,

What I claim as new, and desire to secure by Letters Patent, is

The automatic vaccinating-instrument herein described, consisting ofthe reservoir F, having a hollow lancet, D, tube G, collar I, guide-screw E, pistou and rod J, nut M, and 'spiral spring K, the whole enclosed incase B, and arranged to operate substantially as herein described, and for the purposeset forth.

Witnesses: CHARLES H. ECCLESTON.

SOLOMON BUNDY, D. M. LEE, M. D.- 

